You have no items in your shopping cart.
ABSTRACT
After some period of time the production rate of an oil well may fall to a level that is no longer profitable .Optimum production is the major player in any oil and gas sector. Existing natural pressure may not be sufficient to cause fluid flow from the reservoir to the wellbore region caused by viscous fluid, unwanted excessive pressure drop in the tubing, well mismanagement etc for this reason gas lift system is often recommended during the development of a well or field. Hence this study presents a sensitivity analysis on some of these factors for production on gas lift system. The objective of study includes, building a model using prosper software to determine the production potential of gas lift method compare to natural flowing well. Carryout economic analysis on gas lift system. Develop a gas lift performance curve for the well. Using a field in the Niger Delta and a well NO7 in the field as a case study base on the data of well NO7 analysis with prosper for natural flowing well and gas lift scenarios, the following findings were made, Gas lift gave a larger increase in oil production compared to natural flowing well a difference of 800stb/d resulting to $480,000 per/day , Gas lift is the best option base on the changes in parameters, it was observed that at water cut greater than 65%, well NO7 quit production, while the gas lift case continued up to 95% water cut. Because of the large amount of gas in the reservoir gas lift system should be implemented, in addition, the optimum gas injection rate is far less than the production rate. Finally in terms of profitability, using NPV, IRR, PBP and P/I, the installation of gas lift is a preferred option since profitability is the yardstick, it performed better than natural flowing wells.
